TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Deputy - Deputy is a software for employee scheduling, time and attendance and communication management.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
When I Work - When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.
Burner - Disposable phone numbers -- now with MMS photo support
Planday - Employee scheduling, time tracking & absence management